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lib/oscillators/bbi/Bbi.md
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# BBI: Bulls Bears Index
# BBI: Bulls Bears Index
| Property | Value |
| ---------------- | -------------------------------- |
| **Category** | Oscillator |
| **Inputs** | Source (close) |
| **Parameters** | `p1` (default DefaultP1), `p2` (default DefaultP2), `p3` (default DefaultP3), `p4` (default DefaultP4) |
| **Outputs** | Single series (Bbi) |
| **Output range** | Varies (see docs) |
| **Warmup** | `Math.Max(Math.Max(p1, p2), Math.Max(p3, p4))` bars |
### TL;DR
- BBI (Bulls Bears Index) computes the arithmetic mean of four Simple Moving Averages with geometrically spaced periods (3, 6, 12, 24 by default).
- Parameterized by `p1` (default defaultp1), `p2` (default defaultp2), `p3` (default defaultp3), `p4` (default defaultp4).
- Output range: Varies (see docs).
- Requires `Math.Max(Math.Max(p1, p2), Math.Max(p3, p4))` bars of warmup before first valid output (IsHot = true).
- Validated against TA-Lib, Skender, and Tulip reference implementations where available.
> "Average four moving averages of doubling periods and you get a single line that votes on whether bulls or bears own the tape. It is a committee of trends, each watching a different time horizon, forced to agree on one number."